The difference between the dimple and without dimple of metal domes

June 20th, 2006

As metal domes have dimple and without dimples two kinds, many customers have asked the difference of these two kinds. Well, Let me explain the more details about the dimple domes features today:

First, It’s incresed the travel;
Secondly, it’s with better click feeling when you pressed;
Third, It has the better dust-prood effect;
Last, whether it’s with better conduction, there is no data to verify.

I think you are clear about the difference of the two kinds metal domes. In fact, which kind you will use,
it’s depending on your design.

If you need more information, please feel free to contact us or visit the follow relative subjests:

1. Specifications of metal dome
2. Specifications of dome array
3. Laser Cutting and Mold

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How can we make the dome array

March 20th, 2006

How can we make the dome array as customer’s required? Please follow me to see the details.

The dome array is most for custom design, so we just need the drawing of your product or printed circuit
boards. The information I need to know is the location of the metal domes & the size of outline,
alighment holes, etc.

This is enough for us to make the samples for you evaluate. Upon your confirmation, hehe, I think
it’s time to start the mass production. Do you think it’s too easy?

CMD Manufacture CO., Limited is the leading manufacture of metal dome & dome array, please feel free to
contact us for the more information.

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The specifications of dome array

November 7th, 2005

This time please follow me to know the specifications of metal dome array:

1. Mylar: Transparent, the thickness is 0.05mm on the top layer
2. Spacer: White or Transparent are available. The thickness is 0.075mm, 0.010mm, and 0.0125mm.
3. Adhesive: Thickness is from 0.02 to 0.05mm.
4. Peel-off-paper: It support the metal dome array. You can peel off the metal dome array from the paper, and then stick it onto the PCB. It’s transparent and the thickness is normal 0.07mm.
5. Outline: the size we can make at most 88*78mm. We can make as your  PCB drawing.

Do you clear about the dome array now? If not, please contact us for the more information, we are glad to be at your service.

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The specifications of metal dome

March 22nd, 2005

This time please follow me to know the specifications of the metal dome.

1. The material: our stainless steel of metal domes are made from type 301 SUS. This material we choiced as it’s with low carbon persent (10%) which offers the best oxidiation resistance. We purchase the material from USA and Japan. 
2. The thickness: Normally, the thickness is 0.06mm, 0.08mm, 1.0mm, 1.2mm.
3. Click ratio: CC: Click Ratio; CP: Compression Peak Force; CL: Compression Low Force; RL: Release Low Force; RP: Compression Peak Force
CC(%)=(CP-CL)/CP x 100%, it’s normally between 35% and 60%.
4. Height: The height is equal the stoke + thickness of the metal dome.
5. Life Expectancy:  Life cycles of our metal domes are from 300,000 to 1000,000 times. The life expectancy of our metal domes is very stable.
6. Plating: There are three types for plating: Nickel plating, silver plating and gold plating are available.
7. Usage of snap domes: Metal domes are widely use in the swithces, such as the phone, Mp3, Mp4, Microwave oven, toys, remoted controller, and Medical equioments, and etc..

I think you have an idea about the specifications of the metal domes now. If you need more infomation, please feel free to contact us.

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